MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Isolation of Magnetite Nanoparticles by Colloidal Dispersant in Aqueous Solution
Chang-Neng ShauoChuen-Guang ChaoMing-Chin Cheng
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2006 Volume 47 Issue 1 Pages 143-148

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Abstract

Nanometer-scale magnetite particles were prepared in a dispersing system with a dispersant at a very low concentration. The mean sizes of the particles prepared under optimum conditions were determined using transmission electron microscopy (TEM) to be approximately 3.8 nm. X-ray diffraction and electron diffraction pattern showed that the particles’ phase was consistent with magnetite. The magnetic characteristics were studied using a vibration sample magnetometer (VSM). The dried samples exhibited approximately superparamagnetic behavior.

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© 2006 The Japan Institute of Metals and Materials
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